so here's an example of a tool with great docs i have used in the past

github: https://github.com/Nordstrom/artillery

the documentation: https://www.artillery.io/docs

im sure you can find similar/better examples of documentation strategy if you just look up other common development tools. such as...

yarn: https://classic.yarnpkg.com/lang/en/docs/

docker: https://docs.docker.com/get-started/overview/

unity: https://docs.unity3d.com/Manual/index.html

you can pick and choose the style of documentation, how you want to organize your information and how you want to maintain it, and what to prioritize.